Machine for making tack-strips



QNO Model.) 2 Sheets-Sheet 1. J. A. CROSBIE.

MACHINE POB. MAKING TACK STRIP-S.

110.431,561. 4Patented July 8, 1890.

we mms 21ans co., Pauw-uma., wAswsmou, n. c.

IN@ Model.) 2 sheetssheet 2.

J. A. GROSBIE. MACHINE PoR MAKING TACK STRIPS.

No.4s1,561. PatentedJuIy 8,1890.

(EM al y UNITED STATES I PATENT OFFICE.

JOHN A. CROSBIE, OF METHUEN, MASSACHUSETTS, ASSIGNOR TO THE MCKAY nCOPELAND LASTING MACHINE COMPANY, OF PORTLAND, MAINE.

MACHINE FOR MAKING TACK-STRIPS.

SPECIFICATION forming part of Letters Patent N o. 431,561, dated July 8,1890.

Application filed December 17, 1889- Serial No. 334,070. (No model.)

To all whom t may concern.-

Be it known that I, JOHN A. CROSBIE, of Methuen, county of Essex, Stateof Massachusetts, have invented an Improvement in Machines for MakingTack-Strips, of which the following description, in connection with theaccompanying drawings, is a specification, vlike letters and figures onthe drawings representing like parts. Y

This invention has for its object to provide vmachines for driving tacksinto strips, preferably of paper, with means whereby the machine will beautomatically stopped whenever the strip in which the tacks are beingdriven is broken or buckeled up out of shape, and also when thehead-covering strip becomes broken. Y

This invention is an improvement upon the class of machines described inUnited States Patents No. 247,143, dated September 13, 1881, and No.102,058, dated April 23, 1889.

Prior to my invention I am not aware that a machine for makingtack-strips has ever been provided with mechanism to automatically stopthe machine by reason of any fault in the paper strip receiving thetacks or in the paper strip to cover the heads of the tacks.

My invention consists, essentially, in the combination, with atack-driver and feeding mechanism for the strip in which the tacks areto be driven, of means to automatically stop the machine when the saidstrip is broken; also, in the combination, with the driver and feedingmechanism for the strip, of means for automatically stopping the machinewhen the feed of the paperis obstructed or buckeled up at or near thedriver or between the driver and the feeding mechanism; also, in thecombination, with the driver for a tack, of means to feed a'strip tohave tacks driven into it and means to feed a coveringstrip, combinedwith means to automatically stop the machine when the covering-stripbreaks.

Other features of my invention will be hereinafter more fully described,and pointed out in the claims at the end of this specification.

Figure 1 in front elevation represents part of a well-known'machine formaking tackstrips, the same being partially illustrated together with myimprovements in order that the latter may be fully understood. Fig. 2isa partial right-hand side. elevation of the machine shown in Fig. 1;Fig. 3, an outer side view of the device which I have invented and addedto the machine in question. Fig. 4 is an inner side view of the devicerepresented in Fig. 3; and Fig. 5 is a section in the line x2, Fig. 2.

The frame-work A, the power-shaft @15, the gear a thereon and engaging agear 1,116 (shown by dotted lines, Fig. 1) on the main shaft a, thecam-disk or wheel c, having the camgroove 010, (shown by dotted lines,)the rollerstud c13 to enter the said cam-groove, the said stud being onthe drive-rod bar cl2, the driverod C, secured to the said drive-rod barfrictionally by or through a friction-block f 9 and a screw 3, (thefriction on the drive-rod being sufficient to enable it to drive a tackand not slip on the bar cl2, but to slip if the drive-rod strikes anyunusual obstruction,)` the clutchpulleyF, loose on the main shaft andhaving at its left-hand end suitableproj ectionsto engage suitablerecesses in the right-hand endof the hub of a cam-wheel c7, fast on thesaid shaft to thus form a clutch, the clutch-lever f 5, having suitablestuds to enter the grooved hub f7 of the driver clutch-pulley F', thespring f8, the clutch-rod F, having the handle f4 anda projection f3,(see Figs: 1 and 5,) the vertical rod f, having a lip f2 at its upperend to engage the projection f 3 of the rod F, and having at its lowerend a block f which surrounds, or partially so, the drive-rod bar, whichblock is adapted to be struck by the upper 4end of the drive-rod in thenext rotation of the drive-rod bar after such driverod has struck anobstruction and its upper end has been pushed above the block fg, tothus lift the rod f to release the projection f3, the spring f G, thejaws o8 in the nose or foot w, out between which jaws the tack is drivenby the driverod C, the springs o9 to act on the said jaws, the slidingplate B, the carriage b', the way b2, in which the said carriage moves,the arm b3 to actuate the said carriage, the arm g, the setscrew g', thehook g3, the reel N to contain the foundation strip H20, in which thetacks are to be driven, the longitudinallyslotted bed IOO E3, upon whichthe said strip is laid and travels, the table-plate D, thevertically-movable plate D, the feed-wheels d d', which by their teethengage the bodies of the tacks at'ter they have been driven through thestrip H20, to thus feed the said strip, the intermediate wheel E', thebevel-gear h, engaging the bevel-gear h fast on the axle h2 of thefeed-roll h3, and the means for actuating the said gearing are and maybe all as in United States Patent No. 247,143, which shows substantiallythe same devices, and wherein they are designated by the same letters.l

The main body ot' the machine herein shown is supposed to besubstantially as in the said patent, my additions thereto, and to behereinafter more fully described, being shown in Figs. 3 and 4.

I have hereinf shown a reel N2, containing a covering-strip H, a restfor the said strip, and a paste-box 14, having a roll 13. These devicesare and may be all as in United States Patent No. 402,058.

I will now describe my invention. I attach to the block f', by screws 2in holes 60, a leg 4, on which is pivoted at 5 alever 6, provided at itsupper end (see Fig. 4) with a hook 40, a spring 7, acting normally tokeep the hooked upper end of the said lever within or just back of theedge of the leg 4 next to it, so that the clamping-block fg, attached tothe drive-rod bar cl2, as the latter rises Will not catch the saidhook.l In accordance with my invention the hooked part of this lever isto be kept back out of the range of movement of the said block f so longas the paper strip H is unbroken or is being properly y presented to thedriver and being properly delivered from the machine. It is also to beso kept back so long as 'the covering-strip H is unbroken. The lever 6has a prong 9 connected to it above its pivot. The foot of the lever 6has, as shown, a feeler 12. The leg 4 has pivoted to it at 13 afeeler14, a spring 15, attached to the upper end of the said feeler and to theleg 4, normally acting to keep the lower end of the feeler 14 upon thestrip H20, the edge of the feeler bearing upon the upper side of thesaid strip immediately above the usual longitudinal slot in the said bedE0, in and along which slot the bodies of the tacks travel after theyhave been driven through the said strip H20 by the drive-rod C in usualmanner. The feeler 14 has a pin 16, which normally stands opposite anotch in the lever 6, and a second pin 2O just above the pin 16. Afeeler 17 to act on the covering-strip H is pivoted on the leg at 18,the said feeler havinga cam 19.

So long as the projection f2 of the rod f engages the projection f3 ofthe rod F the clutch-pulleyvF is kept engaged against the hub of thecam-Wheel c7, and the machine is kept running.

In operation the strip H20 is led under the foot of the feeler 12, thefoot of the lever 6, and the feelers 14 and 9, the said strip iinallypassing under the roll h3, thefeeler 14, however, being the only onewhich actually bears or needs to bear vupon the said strip when it liesflat upon the slotted bed E or is not buckeled up.

The t'eeler 17 rests in contact with the covering-strip H, as shown inFig. 1, and at such time the cam 19 stands as in Fig. 4, and the upperend of the lever 6 is held back by the spring 7.

In Fig. 3 I have shown the strip H20 as moving properly under thedevices which I have added to the machine referred to, and it will benoticed in said figure that only the feeler 14 rests on the said strip,so that the pin 16 touches, or nearly s0, the lever 6; but should thestrip break the end of the feeler drops a little, due to the spring 15,j ust enough to per' mit the pin 2O to strike the lever 6 and move it sufiiciently against the actio'n of the spring 7 to place the hook 40 atthe upper end of t-he said lever in the range of movement of the blockff as it rises, thus lifting the rod f and causing it to operate, as inthe said patent,

vand release the rod F and free the clutch f7 from the pulley F and stopthe machine, as in the said patent.

In Fig. 3 by dotted lines I have shownthe paper strip bunched up in twoplaces.

In case the paper bunches up under the foot of the lever 6 between thedriver and the feeler 14, the hunched-up part Will strike the said footbetween the feeler 12 and the Eeeler 14, and by acting against the underside of the said foot will throw the hook 40 of the lever 6 out in therange of movement of the block f, which Will lift the rod f and effectthe stopping of the machine.

In case the strip H20 bunches up between the feeler 14 and the wheel72,2, then the bunch acts upon the feeler 9 to lift it and throwr outthe upper end of the lever 6, and so, also, in case 'the strip H breaksit permits the outer end of the feeler 17 to fall, so that the cam 19 bystriking the lever 6 moves its hooked end out to be engaged by theblockf).

In case a tack should not be fully driven or should be broken, so thatthe strip cannot pass freely under the nose containing the jaws o8, thenthe portion of the tack above the strip by coming against the jawnearest the leg carries the saidjaw with it, causing the spring actingon the said jaW to hit the feeler 12 and cause it to tip th'e lever 6 onits fulcrum far enough to placefits hooked end in the range of the blockf5. v

Instead of the particular form of clutchpulley herein shown, I mayemploy any other usual or well-known form of clutch or pulley, togetherwith any usual means to keep it in operative engagement so long as saidmeans may be released by the rod f.

The gist of my invention is to so improve tack-strip making machines asto obviate waste due to breaking or to bulging up of the Strip.

I claim- IOO IIO

1. In a machine for making'tack-strips, the following instrumentalities,viz: a drive-rod bar, a projection thereon, actuating` means for thesaid drive-rod bar, a support for the strip in which the tacks are to bedriven, the leg 4, a hooked lever thereupon, a feeler 14 to bear on thesaid strip, a spring to keep the l said feeler on the said strip, andapin or projection between the said feeler and lever to place the hookedend of the lever in the path of movement of the projection -on thedriverod bar when the strip breaks, substantially as described.

2. In a tack-strip making machine, the combination of the followinginstrumentalities, viz: a drive-rod bar, a projection on the saiddrive-rod bar, means to actuate the drive-rod bar, a support for thetack-strip into which the tacks are to be driven, the leg 4, and thelever 6, having a hook and a foot, substantially as described, wherebythe action of a bunched portion of the paper on the foot places the hookof the said lever in the range of the said projection to operatesubstantially as described.

3. In a machine for making tack-strips, the following instrnmentalities,viz: a drive-rod bar, a projection thereon, means to actuate thedrive-rod bar, a support for a tack-strip, and the leg 4, combined withthe hooked lever, its spring 7, and the feeler 9, to operatesubstantially as described. n

4. In a machine for making tack-strips, the following instrumentalities,viz: a drive-rod bar, a projection thereon, means to actuate thedrive-rod bar, a support for a tack-strip, and the leg 4, combined withthe hooked lever, its spring 7, and the feeler 17, havingl a camprojection, the said feelerbeing adapted to act upon the covering-strip,substantially l as described.

bar, its attached drive-rod, a projection on the said drive-rod bar, ashaft having a cam to aotuate the drive-rod bar,.a clutch on the saidshaft, means to keep the said clutch in operative engagement with thesaidshaft, a leg 4:, an attached hooked level' adapted to be engaged bythe projection on the driverod bar, a feeler 14, and means between itand the said lever to enable-the feeler to actuate thesaid lever Whenthe tack-strip upon which the feeler rests breaks, and meansintermediate the said leg and the said clutch to actuate the latter andstop the rotation of the said shaft when the paper strip breaks,substantially as described.

In testimony whereof I have signedH my name to this specification in thepresence of two subscribing witnesses.

JOHN A. CROSBIE.

NVitnesses:

GEO. W. GREGORY, E. J. BENNETT.

